ii. Lessor and Lessee shall thereafter make a cash adjustment in respect of each life limited part as follows. The difference between the number of hours and cycles remaining on each disk on the Commencement Date and Expiration Date shall be calculated (the "Disk Differential"), and multiplied by an amount equal to the then prevailing hour/cycle value (which values shall be the Pratt & Whitney published disk costs divided by the number of allowable hours/cycles for such disk) (the "Disk Differential Cost"). The Disk Differential Cost shall be calculated and totaled for each Engine's life limited part (the "Disk Differential Total"). If the Disk Differential Total is negative, then Lessee shall pay Lessor the Disk Differential Total. Lessee will be permitted in draw upon funds in the applicable Maintenance Reserve account to compensate Lessor. If the Disk Differential Total is positive, then Lessor shall pay Lessee the Disk Differential Total provided that the Disk Differential Total does not exceed $100,000. 



 e) Lessee and Lessor acknowledge that Lessor shall share the cost of the first Engine Shop Visit of each Engine which occurs after the Lease Commencement Date. Lessor's cost shall be paid following such Engine Shop Visit and is defined as the Engine Top-Off in this Lease. Upon return of each Engine, Lessee shall compensate Lessor for any hours consumed by Lessee since the last Engine Shop Visit occurring prior to the Redelivery Date, based on the Engine performance restoration portion of the Maintenance Reserve rate, which is $90/hour. Lessee will be permitted to draw upon funds in the applicable Maintenance Reserve account to compensate Lessor.